Patents
Sitemap › H04 - Electric communication technique › H04B - Transmission › H04B 3 - Line transmission systems
Patents for H04B 3 - Line transmission systems (31,523)
12/2003
12/04/2003US20030223573 Method and apparatus for providing echo cancellation
12/04/2003US20030223489 Receiver with a decision feedback equalizer and a linear equalizer
12/04/2003US20030223486 Method for detecting data transmission rate of USB controller by using USB device
12/04/2003US20030223483 DSL modem apparatus and reception method for DSL communication
12/04/2003US20030223462 Carrier-suppressed optical time domain multiplexing
12/04/2003US20030223459 DSL modem apparatus and communication control method for DSL communication
12/04/2003US20030223382 Echo canceller employing H-register and storage register
12/04/2003US20030223160 Ground fault circuit interrupter for coaxial drop cable and method of operation
12/04/2003US20030222748 Construction of medium voltage power line data couplers
12/04/2003US20030222730 Impedance matching circuit and noise filter equipped with the same
12/04/2003US20030222654 Cable testing, cable length, and liquid level determination system utilizing a standing wave reflectometer
12/04/2003US20030222653 Method of and apparatus for simultaneously providing tone and intermittent link onto a cable to assist identifying the cable
12/04/2003CA2487848A1 Broadband communications using a medium-voltage power line
12/03/2003EP1367792A2 DSL modem apparatus and reception method for DSL communication
12/03/2003EP1367791A2 Gain control for a multicarrier modem
12/03/2003EP1367738A1 Distributed echo cancelling
12/03/2003EP1367737A1 Echo cancellation system
12/03/2003EP1367736A1 Echo canceller
12/03/2003EP1366608A2 Equalising and decoding device for frequency-selective channels
12/03/2003EP0734619B1 Communication network comprising a transceiver
12/03/2003CN1460338A Exciter system and method for communications within enclosed space
12/03/2003CN1459962A Fast time delay optimization method of time domain equalizing training in discrete multisound system
12/03/2003CN1130057C Method and device for blind equalizing of transmission channel effects on digital speech signal
12/02/2003US6658119 Audio signal cable with passive network
12/02/2003US6658107 Methods and apparatus for providing echo suppression using frequency domain nonlinear processing
12/02/2003US6658071 Delayed decision feedback log-map equalizer
12/02/2003US6658055 Method for accelerating the training of adaptive echo cancelers in the presence of interfering sinusoidal signals
12/02/2003US6658054 Waveform equalizer and data reproducing apparatus using the same
12/02/2003US6658052 Systems and methods for establishing a diagnostic transmission mode and communicating over the same
12/02/2003US6658049 xDSL repeater system and method
12/02/2003US6658047 Adaptive channel equalizer
12/02/2003US6658024 Data transmission device and data transmission method capable of minimizing delay of fast data both in normal conditions and noisy conditions
11/2003
11/27/2003WO2003098833A2 Apparatus and method of echo-cancellation
11/27/2003WO2003098832A2 Time domain equalization using frequency domain operations
11/27/2003WO2003098813A2 Flexible power line modem
11/27/2003WO2003098644A2 Data access arrangement using a high frequency transformer for electrical isolation
11/27/2003WO2002082701A3 Clock synchronization over a powerline modem network for multiple devices
11/27/2003US20030220011 Modular connector for a data communications system enabling near-end crosstalk to be adjusted
11/27/2003US20030219113 Echo canceller with double-talk and channel impulse response adaptation
11/27/2003US20030219112 Apparatus and method for echo control
11/27/2003US20030219108 Telephone apparatus used for setting house code
11/27/2003US20030219083 System and method for improving coding gain performance within gigibit phy viterbi decoder
11/27/2003US20030218992 Techniques to cancel echo tail
11/27/2003US20030218578 Automatic equalization of video signals
11/27/2003US20030218550 Intelligent power supply and cable system
11/27/2003US20030218549 Powerline communications system for providing multiple services to isolated power generating plants
11/27/2003US20030218389 Submarine branching unit having aysmmetrical architecture
11/27/2003DE10226347C1 Transmission path parameters determination method using echo pulse response with echo compensation for line beginning and/or line end echo
11/26/2003EP1365534A1 Viterbi decoder for gigabit ethernet
11/26/2003EP1044558B1 Methods and apparatus for controlling echo suppression in communications systems
11/26/2003CN2588679Y Network transmission interface
11/26/2003CN1459176A Broadcasting system for power line network
11/26/2003CN1129133C Adaptive equalizing circuit
11/25/2003US6654463 Round trip delay estimator and compensator for the echo canceller
11/25/2003US6654462 Line terminal circuit for controlling the common mode voltage level on a transmission line
11/25/2003US6654411 Method and system for estimating error rate of a communication channel over a wide dynamic range
11/25/2003US6653936 Patch and tire monitoring device
11/25/2003US6653932 System and method for achieving wireless communications coverage in a local area
11/20/2003WO2003096568A1 Telecommunication network on electric power transmission line
11/20/2003WO2003096566A1 Automatic frequency badwidth matching and noise filtering for internet service of master antenna television network
11/20/2003WO2003096526A1 Hybrid distortion compensation method and hybrid distortion compensation device
11/20/2003WO2003096503A2 Power theft prevention based on signature monitoring on power lines
11/20/2003WO2003094765A2 Method and system for power line network fault detection and quality monitoring
11/20/2003WO2003019424A3 Insertion of repeaters without timing constraints
11/20/2003US20030215244 Optical communication system, signal relay apparatus and optical communication connector
11/20/2003US20030215086 Methods and systems for providing multi-path echo cancellation
11/20/2003US20030215020 Data access arrangement using a high frequency transformer for electrical isolation
11/20/2003US20030214903 Method for hardware reduction in echo canceller and near-end crosstalk canceller
11/19/2003EP1363409A1 Wide-band communication network for power line system
11/19/2003EP1363408A1 Apparatus and method of echo-cancellation
11/19/2003EP0992118B1 Transmission of fm video signals over various lines
11/19/2003EP0908034B1 Optical transmission systems using optical amplifiers and wavelength division multiplexing
11/19/2003CN1457492A Adaptive equalizing circuit and regenerative device using it, and adptive equalizing method
11/19/2003CN1457151A Noise eliminating method and noise silencer
11/19/2003CN1128512C Method for providing speaking telephone operation in portable communication equipment
11/18/2003US6650917 Signal processing apparatus
11/18/2003US6650713 Maximum likelihood sequence estimation apparatus
11/18/2003US6650627 Tone detection in communication networks
11/18/2003US6650622 System for communicating with electronic equipment
11/13/2003WO2003094382A1 Adapter for communicating over power line
11/13/2003WO2003094381A1 Method and apparatus in a telecommunication system
11/13/2003WO2003094365A2 Construction of medium voltage power line data couplers
11/13/2003WO2003094364A2 High current inductive coupler and current transformer for power lines
11/13/2003WO2003094283A2 Full duplexing for power line data communications
11/13/2003WO2003065785A3 Method and apparatus for concatenating and piggybacking data packets
11/13/2003WO2003026186A3 Subnet of power line communication network, method for setting up the same, electronic appliance connected to the same, and communication module used in electronic appliance
11/13/2003WO2003026185A3 Method for joining node into subnet of power line communication network, electronic appliance connected to subnet, and communication module used in electronic appliance
11/13/2003WO2003026184A3 Method for detecting and regulating identifier overlap on power line communication network, electronic appliance connected to subnet of power line communication network, and communication module used in electronic appliance
11/13/2003WO2003005380B1 Device for the inductive transmission of electrical power
11/13/2003US20030210796 Wired, wireless, infrared, and powerline audio entertainment systems
11/13/2003US20030210770 Method and apparatus for peer-to-peer voice communication using voice recognition and proper noun identification
11/13/2003US20030210747 Digital subscriber line induction neutralizing transformer network
11/13/2003US20030210734 Noise elimination method and apparatus
11/13/2003US20030210135 Protecting medium voltage inductive coupled device from electrical transients
11/13/2003CA2485094A1 Construction of medium voltage power line data couplers
11/13/2003CA2483586A1 Full duplexing for power line data communications
11/13/2003CA2481579A1 High current inductive coupler and current transformer for power lines
11/12/2003EP1361673A1 Rack-based microwave bus for digital devices
11/12/2003EP1361672A1 Microwave waveguide bus for digital devices
11/12/2003EP1361671A1 Microwave waveguide bus for digital devices
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